<template>
	<view>
		<view class="goods-list">
      <view v-for="(goods,i) in goodsList" :key='i' @click="gotoDetail(goods)">
        <my-goods :goods="goods"></my-goods>
      </view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
        // 请求参数对象
				queryObj:{
          query:'',
          cid:'',
          pagenum:1,
          pagesize:10
        },
        // 商品列表
        goodsList:[],
        // 数据量
        total:0,
        // 节流阀
        isloading:false
			};
		},
    onLoad(options){
      this.queryObj.query = options.query || ''
      this.queryObj.cid = options.cid || ''
      
      this.getGoodsList()
    },
    methods:{
      // 获取商品列表数据的方法
      async getGoodsList(cb){
        // 打开节流阀
        this.isloading = true
       const{data : res} =   await uni.$http.get('/api/public/v1/goods/search',this.queryObj)
       // 关闭节流阀
       this.isloading = false
       // 只要数据请求完毕 就立刻按需调用cb回调函数
       cb && cb()
       if(res.meta.status !== 200) return uni.$showMsg()
       this.goodsList = [...this.goodsList,...res.message.goods]
       this.total = res.message.total
      },
      // 上拉加载更多
      onReachBottom(){
        if(this.queryObj.pagenum * this.queryObj.pagesize >=this.total) return uni.$showMsg('数据加载完毕')
        if(this.isloading) return
        // 让页码值自增+1
        this.queryObj.pagenum++
        // 重新获取列表数据
        this.getGoodsList()
      },
      // 下拉刷新
      onPullDownRefresh(){
        // 重置关键数据
        this.queryObj.pagenum =1
        this.total = 0
        this.isloading = false
        this.goodsList = []
        
        // 重新发起数据请求
        this.getGoodsList(() => uni.stopPullDownRefresh())
      },
      // 前往商品详情页
      gotoDetail(goods){
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id=' + goods.goods_id
        })
      }
    }
	}
</script>

<style lang="scss">

</style>
